Currently, the common causative agents of pneumonia in adults are mainly mycoplasma, as well as pneumonia caused by Streptococcus pneumoniae. For community-acquired pneumonia, mycoplasma pneumonia often causes serious consequences mainly nausea, vomiting, loss of appetite, diarrhea, arthralgia, and extra-pulmonary manifestations such as myocarditis, pericarditis, hepatitis, peripheral neuritis, and meningitis and skin maculopapular rash. If the body temperature returns to normal and the cough is relieved by effective treatment, the extrapulmonary manifestations will also be relieved and rarely form severe pneumonia. In the case of lobar pneumonia caused by Streptococcus pneumoniae, most of the manifestations are multi-stage coexistence, and the prognosis is relatively good, without causing serious sequelae or affecting lung function.